Anti-bolt-loosening device.



' A. C. MILLER. ANT|-BOLTLOOSENING DEVICE.

APPLICATION FILED MAY 9. I9I4.

1 177,348. Patented Mar. 28, 1916.`

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ATTORNEY.

A. C. MILLER.

ANTIBOLTLO0SENING DEVICE.

APPLxcATloN FILED MAY 9. |914.

l 177,348. Patented Mar. 28, 1916.

2 SHEETS-SHEET 2.

j. gw m' TME COLUMNA FLANOGRAPH Co., WASHINGTON. D. c.

ALVIN C. MILLER, OF KANSAS CITY,K1VIIVSSOURI.

ANTI-BOLT-LOOSENING .'DEHVICE.` ;y

To all whom z'tvmay concern.' n

,'Specifricaton of Letters Batent. Patented Application led lttay.k 9, 1.914. Serial No. 837,400.

Be it known that I, ALvIN C. MILLER, a

citizen of the ,United States, residing at Kansas City, in the county of Jackson andkv State of Missouri, have invented certain new and useful Improvements in Anti-Bolt.

Loosening Devices, ofwhich the lfollowing is a specification.

VMy invention relates to an vanti-bolt loosening device, and the invention, while susceptible of other uses, is especially adapted to preventing bolts with their nuts from becoming loose on rail joints.

I have determined by actual practice that x rail joints cannot be4 maintained in a tight condition by merely locking Vthe nuts thereof from rotating backward independently of the bolts. In order to accomplish the desired result the bolt as well as its nutmust. kbe reliably secured from lateral movement or rotation, excepting such times as it becomes necessary to rotate the nut with a wrenchV to either tighten or remove said nut. In order to accomplish the desired result I have producedY coperating j elements which are socombined and arranged as to engage the bolt and its nut and thus prevent independent rotation or other move' ment of either, hence it will be impossible for the bolt to turn in the nut and become loose or the nut to turn on the bolt and be-` Figure 1 is a side elevation of a rail-y joint provided with my device. Fig.v 2 is.,V a horizontal section oir lineII-II of Fig.

1. Fig. 3 is a side elevation of a bolt-holding plate with its detent. Fig. i is a detail:

perspective of a curved detent employed in carrying out the invention. Fig. 5 is a side elevation of a bolt-securing plate constituting one of the elements of the invention.

Fig. 6 is an end view partly in section of av rail and joint provided with my device.

In the drawing, I haveshown'the device .forwardl-yltapered lugs F, whichiitloosely in the-holes D of the adjacent angle-bar B. Gn designates the customary nuts which screwuponthe threaded ends of the bolts E. z

l vdesignates aY bolt-holding plate having a roundfhole 2 for the passage of bolt E, and ,a straight lower edge 8 to rest. squarely upon the base of the adjacent angle-barB, as disclosedby: Fig. 1. The bolt-holding plate 1 is provided adjacent one corner with a lprojection 4L having a curved channel 5 communicating with an opening 6 near the bolt hole 2.v Channel 5 flares upwardly and the upper end of itstop wall terminates in a shoulder 7,for a purpose which will hereinafter appear. i The cionvexrsides of the channel 5 and the opening 6 are presented. to the nut G, as disclosed by Fig. 1. l f

8 designates .a curved detent operably-f arranged invfchannelj and the opening-6, and provided at its upper end with a shoulder 9, which is heldin engagement with the shoulder 7 when the nut Cr is bearing against the lower portion of said detent. Thelower portion of the detent 8 has a recess 1G in its convex side to receiveY the adjacent corner of the nut G, as disclosed by Fig. 1.,

1l designates a `bolt-securing plate having an oblong Vor elliptical` hole 12 for the passageof the bolt E, and a straight lower edge 13,' which, like the edge 3 of the bolt-holding plate, lits. securely upon the base of one of the angle-bars B. The margin of the boltsecuring-plate 11, surrounding the hole 12, is serrated or corrugated as indicated at 14,

for a purpose which will hereinafterv ap pear.

In practice, when the angle-bars B are assembled with the rail A, the bolt-securing plate 11 is piaced in position against one Y of the said angle-bars, while the bolt-holding plate 1 is placed against the companion angle-bar B. The bolt E is then placed through the whole until its'forwardly ta- 4 pered lugs F contact the corrugations 'or applied to a rail-joint consisting of the cus--y tomaryrails A'Yand the angle-barsB, hav-V ing holes C and I), respectively, rrorthey passage of the bolts E, which fit loosely in said holes. ends adjacent their heads with the usual Bolts E are providedpat their serrations 14, when the bolt is driven forward until its head rests squarely against the securing-plate l1, which reliably secures the bolt from turning-in the holes C, D and 2. As the bolt is driven forward the corrugated or serrated Vmargin 14 yields slightly, as'disclosed by Fig. 2, and thus prevents buckling of the bolt-securing-plate 11. The nut G is then screwed upon the threaded end ofthe boltfE,'until said nut irmlyengages Maf. as, 191e; j

the adjacentside of the bolt-holding-Vv plate l. lhen the nut G is rotated in the direction of arrow a its corners contact' the lower end yofthe detent 8 and intermittentlyliftthe willl not contact the shoulder 7. After the` nut G has been firmly screwed against the bolt-holding-plate l, it is turned vbackward slightly until one of its corners engagesthe recessed portion 10 of the detent S, which is thereby rocked into the position disclosedv by Fig. l, causing its shoulder 9 to engage the shoulder 7, and thus secure said detent 8 from being removed Vby persons mischievously or maliciously inclined.

IVhen the nut Gis 1 turned backward slightly, as above described, vthe ldetent 8 isl with the nut G in assisting the bolt securingplate 1l inholding the bolt Eagainst rotation or other movement.

From the foregoing description it will be readily understood that the bolt E is positively' held from rotation and lateral move-v ment through the combination and coperation, of the bolt-securing-plate ll, the holding-plate l, the nut G, and the detent V8. As the nut G is screwed upon the bolt E, the

plates 1 and 1l slide upward on the sloping bases of the angle-iron B, and force the bolt into contact with fthe upper sides of .the holes D', thereby preventing further movement in any direction of saidl plates and lthe bolt, due to the passing of car-wheels over the rail-joint. Vhile the nut G may be turned in the direction of the arrow a from time to time to takeV up any slackv which may occur, said nut cannot be unscrewed from the bolt E, without-first llifting the detent 8 out of the path of said nut, which may be accomplished after the nut has been turned forward sufficiently to clear theV walls of the recess 10.v Downward movement of the detent 8 is limited by the lower end of the opening 6.

While I have shown and described the preferred form of my invention, I reserve the right to make such changes in the construction, combinatiomand arrangement of parts as properly fall within the Vspirit and scope ofy the claims.

Having thus described my invention, what I claim anddesire to' secure by Letters Patentfis:

l. The combination with a bolt and its nut, of a bolt-holding-plate having a hole to receive the bolt and a curved channel with its Convex Side presented to the nut,

and la curved detent operably-arranged with-A- in said channel `so thatit may be moved into prout of the path of the rotative movement of the nut with respect: to the bolt.

the path of the rotative movement of the nut withvrespect to the bolt, and meanstov securethe bolt from rotation.

3. rl`he combination with a bolt and its nut, ofa non-rotatable.bolt-holding plateI VSO side of said bolt hole, saidY projection beinghaving a bolt hole and a-projection at one provided with; a channel curved in the arc of a circle and conveXly curved with respect to the nut, saidv channel fiaringtoward its upper end, a shoulder on the bolt-holding plate projecting into'the upper'end of said channel, and a vcurved detent operably-ar-r ranged vin said channel and *Yadapted'to` be` moved'into or out ofthe path lof rotative movement of the nut with respect lto Ithe bolt, said detent having a shoulder forengagement Awith thefshoulder at .the upper.

end of the channel ywhen the nut iis turned backward against .the lowerv end of said"l detent.

l. In a kdevice of the character described, a nonrotatable bolt-holding plate Ahaving la bolt hole and aprojection at one side ofA said bolt hole provided withr a curved `upwardly flaring channel, a shoulder` on said boltholding Aplate projecting vinto the upper `end of said channel, and a curved detentzoperably-arranged in said channel `and having y ashoulder at its upper end Vfor engagement with'the first-mentioned shoulder and-a recess in its lower portion.

The combination withpanut and a bolt i with lugs at one end thereof, of a nonrotatable bolt-holding plate having a hole for."

the bolt and a projection at one side of said hole provided. with a curved 1 channel, a shoulder on said bolt-holding plate project-ping into the upper endrfof the channel, a

curvedv detent;operably-arrangedA in said channel and having ashoulder at its upper end for engagement. with the first-mentioned shoulder anda recess in its lower portion to'.

receive any corner fof 'the,vnut, vand a boltsecuring plate havinganelliptical hole-to receive the luggediend. of the bolt'and/itsi lugs.

6. The combination with a pair of rails and a pair of angle-bars arranged at opposite'fsides thereof and provided with bolt holes registering with boltholes in saidrails,

bolts extending looselv through saidrholes,;

nuts on said bolts,boltse`curing plates having elliptical; holes `to receive the lugged ends 1` of'the bolts, bolt holding plates to receive the opposite ends ofg the bolts, saidboltisen '1,177,348 3 `curing and holding plates being adapted to Y n testimony whereof I affix my signature, bear against the lower portions of the anglein the presence of two witnesses. bars and firmly force the Vloolts against the upper sides of the holes in said angle-bars, ALVIN C MILLER' and detents carried by the bolt holding Witnesses: plates and adapted to be moved into and out F. G. FTSCHER,

of the rotative movement of the nuts. FRED C. FISCHER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

